DISTANCE MEASUREMENT SYSTEM, DISTANCE MEASUREMENT METHOD, INFORMATION PROCESSING DEVICE, PROGRAM, AND RECORDING MEDIUM

摘要

[Object] An object of the present invention is to obtain the distance between multiple information processing apparatuses with a high accuracy. [Solution] There is provided a distance measuring system for measuring the distance between a first information processing apparatus and a second information processing apparatus. The system includes a time synchronizing part for synchronizing the reference time of the first information processing apparatus with the reference time of the second information processing apparatus, the reference time being used for measuring the distance; a sound signal transmitting part for transmitting a sound signal from the first informationprocessing apparatus to the second information processing apparatus in a state where the reference time of the first information processing apparatus and the reference time of the second information processing apparatus is in synchronization with each other; and a distance calculating part for calculating the distance between the first information processing apparatus and the second information processing apparatus on the basis of the sound transmission timing that is determined on the basis of the reference time of the first information processing apparatus and at which the sound signal has been transmitted and the sound reception timing at which the sound signal has been received and which is identified by the second information processing apparatus on the basis of the reference time.